Step clock by makit

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More information about calibration and complete assembly instructions with pictures can be found at makitpro.com Description I have been wanting to use some stepper motors to design a clock for a long time, and finally I could find some time and IT IS HERE! It uses two steppers to move hour and minute hands independently with 3D printed concentric shafts, while one Arduino compatible board controls everything. For me, there were two big challenges; designing the concentric shafts and the position detection system. I spent quite some time thinking about the design before the first approach. Then, when I printed the first version, I decided to change some major things to make it easier to assemble. Finally, after a couple of prints and tests, I’m quite satisfied with this final version. It uses two hall sensors to know where the initial position is and a concentric shaft system with bearings. It also uses a real time clock module to keep track of the time when it loses power, so you only have to set it the first time or when changing batteries. You’ll find different “faces” (covers), so you can choose the one you like the most, or have different models ready for swapping them depending on the occasion. In addition, they are stackable, so you can print a couple of them and create some unique layouts and keep track of different time zones!! Printing settings All parts print without supports. The body is a long print (about 6-7hours). I decided to design it with 1.6mm wall so it…